Jika (f(x)=px+q dengan f(2)=-8 dan f(3)=-7 nilai 2p-q adalah

Mapel : Matematika

Kelas : 8

Bab : Relasi dan Fungsi
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f(x) = px + q

f(2) = -8
2p + q = -8....... (1)


f(3) = -7
3p + q = -7....... (2)

Gunakan Metode Eliminasi
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2p + q = -8
3p + q = -7
....................... -
-p = -1
p = 1 ✔


2p + q = -8
2(1) + q = -8
q = -8 - 2
q = -10


Sehingga :
= 2p - q
= 2(1) - (-10)
= 2 + 10
= 12 ✔

f(x) =px +q
f(2) = -8

2p+q=8___(1)
f(3) = -7

3p+q= -7__(2)

Answer/jawabanya:

=2p-q
=2(1) -(10)
=2+10
=12✔✔